const a = '1'
const b = 1
const c = true
const d = null
const e = undefined
const f: number[] = [1, 2, 3]
enum Color {
  RED,
  GREEN,
  BLUE
}
interface Person {
  name: string,
  age: number,
  isAdmin: boolean
}

const user: Person = {
  name: 'Alice',
  age: 30,
  isAdmin: true
}
console.log(`Hello, ${user.name}! You are ${user.age} years old.`)
